Standard operating procedures (SOPs) outline the steps to be followed to maintain a secure baseline, such as testing and deploying patches while minimizing risk to the system.

To block signature-based attacks, the Intrusion Prevention System (IPS) must be in active mode.
In this mode, the IPS can actively monitor and block malicious traffic in real time based on predefined signatures. This is the best mode to prevent known attack types from reaching the internal network.
Monitor mode and sensor mode are typically passive, meaning they only observe and log traffic without actively blocking it.
Audit mode is used for review purposes and does not actively block traffic.

Access control lists (ACLs) allow administrators to fine-tune file permissions by specifying which users or groups have access to a file and defining the level of access.

To ensure the integrity of compiled binaries in the production environment, the best security measure is code signing. Code signing uses digital signatures to verify the authenticity and integrity of the software, ensuring that the code has not been tampered with or altered after it was signed.
Code signing: Involves signing code with a digital signature to verify its authenticity and integrity, ensuring the compiled binaries have not been altered.
Input validation: Ensures that only properly formatted data enters an application but does not verify the integrity of compiled binaries.
SQL injection: A type of attack, not a security measure.
Static analysis: Analyzes code for vulnerabilities and errors but does not ensure the integrity of compiled binaries in production.